7866996679 has 2 divisors, whose sum is σ = 7866996680. Its totient is φ = 7866996678.

The previous prime is 7866996667. The next prime is 7866996689. The reversal of 7866996679 is 9766996687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7866996679 - 2⁹ = 7866996167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7866996649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3933498339 + 3933498340.

It is an arithmetic number, because the mean of its divisors is an integer number (3933498340).

Almost surely, 2^7866996679 is an apocalyptic number.

7866996679 is a deficient number, since it is larger than the sum of its proper divisors (1).

7866996679 is an equidigital number, since it uses as much as digits as its factorization.

7866996679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370355328, while the sum is 73.

The square root of 7866996679 is about 88696.0916782696. The cubic root of 7866996679 is about 1988.8543930190.

The spelling of 7866996679 in words is "seven billion, eight hundred sixty-six million, nine hundred ninety-six thousand, six hundred seventy-nine".